Writer: Palmyra X5

Palmyra X5 is a text-only model from Writer with a context window of roughly one million tokens, large enough to process book-length documents or extensive codebases in a single pass. It does not support tool use, reasoning modes, or structured output, so it is suited to straightforward text generation and analysis tasks rather than agentic workflows or schema-bound outputs. At $0.60 per million input tokens and $6.00 per million output tokens, the pricing is modest on the input side but sits at a level where output costs can accumulate quickly for high-volume use cases. There is currently no independent benchmark coverage to assess quality against competing models, which makes it difficult to recommend with confidence for teams that need verified performance data before committing. Buyers with existing Writer platform relationships, or those running long-context summarization and document work at relatively low output volumes, are the most natural candidates to evaluate it.